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Int J Pediatr Obes. 2010 May 3;5(3):265-73. doi: 10.3109/17477160903268282.

Canadian childhood obesity estimates based on WHO, IOTF and CDC cut-points.

Author information

1
Health Information and Research Division, Statistics Canada, Ottawa, Ontario, Canada. Margot.Shields@statcan.gc.ca

Abstract

OBJECTIVE:

This article compares prevalence estimates of excess weight among Canadian children and youth according to three sets of body mass index (BMI) reference cut-points. The cut-points are based on growth curves generated by the World Health Organization (WHO), the International Obesity Task Force (IOTF), and the US Centers for Disease Control (CDC). A secondary objective is to compare estimates by method of data collection.

METHODS:

Prevalence estimates of overweight and obesity were produced for 2- to 17-year-olds using the three sets of BMI cut-points. Estimates are based on data from 8 661 respondents from the 2004 Canadian Community Health Survey and 1 840 respondents from the 1978/79 Canada Health Survey. In both surveys, the height and weight of children were measured.

RESULTS:

The 2004 prevalence estimate for the combined overweight/obese category is higher (35%) when based on the WHO cut-points compared with the IOTF (26%) or CDC (28%) cut-points. Estimates of the prevalence of obesity are similar based on WHO and CDC cut-points (13%), but lower when based on IOTF cut-points (8%). Absolute differences in excess weight estimates between 1978/79 and 2004 are similar based on the three sets of cut-points, but the relative increase is greater when based on the IOTF cut-points. Estimates vary substantially by method of data collection.

CONCLUSION:

When interpreting prevalence estimates of overweight and obesity for children and youth, it is important to consider the definitions used and the method of data collection.

PMID:
20210678
DOI:
10.3109/17477160903268282
[Indexed for MEDLINE]

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